5 ms·FYI, even according to the protocol it is back doored. Search for lawful intercept.by frittig 7y agoFYI, even according to the protocol it is back doored. Search for lawful intercept.nradov 7y agoIt's a front door, not a back door. Lawful intercept of telephone calls has been a stated requirement for every previous generation of cellular technology going back many years. This was never a secret.JohnFen 7y agoIt's still a back door. It's just a legally required one.